Yep, Shukaku's gone. The only solid info we have is the little hint that he can still use the sand, from when he lifted up Naruto's hand with it. Personally I would speculate that he can still do what he was doing against Deidara, because he never really tapped into Shukaku's power at that time. It could be that, like Naruto, his own chakra has been merging with that of his Bijyuu for years, and that this "hybrid" chakra wasn't removed from him. Similarly, by that principle Naruto could still do Tajyuu Kage Bunshin if Kyuubi were removed from him, but he wouldn't be able to summon Gama Bunta(pre-timeskip, at least) or become Kyuubified.